A potion that makes you small and go through tunnels

[OrangeFreeman]

Maybe 800 or 1600 item that temporarily shrinks your model, allowing you to traverse through tunnels.

Kinda like Giant's Ring in Dota but reversed. Think about it, Yoshi.

 

[bloodfrost27]

We need something like this. Or even an item thats only purpose is to let you go in tunnels. Id like it if every character could access it for a cost but certain characters innately can enter for free